Nuclear Geiger Counter Kit with Sound & Alarm — DIY Radiation Detector (Purple/Multicolor)

Geiger counter kit featuring audible sound and an alarm, offered in purple or multicolor. Power options: 5V power supply, or 3 * 1.5V battery; 4 * 1.2V battery. Current draw: 30mA - 120mA. The board provides an interrupt output interface that can be connected to a microcontroller for subsequent display on an LCD. Compatible with most Geiger tubes including M4011, STS-5, SBM20, J305, etc., and supports Geiger tube operating voltages from 330-600V. Enables PC data acquisition and Matlab analysis/processing. Detection capability: gamma rays 20mR/h-120mR/h and soft beta radiation 100-1800 off variables/points.